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NURS 5315 Module 7 Exam Questions and Answers 2024( A+ GRADED 100% VERIFIED).
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NURS 5315 Module 7 Exam Questions and Answers 2024( A+ GRADED 100% VERIFIED).
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NURS 5315 Module 7Cranial Nerve I Function and sign of dysfunction - ANS Olfactory
sensory, carries impulses for sense and smell
Loss or disturbance in the sense of smell
Cranial Nerve II Function and sign of dysfunction - ANS Optic
Sensory, carries impulses for vision
decreased visual acuity and contrast sensitivity, impaired color vision, and an afferent pupillary
defect. (blindness)
Cranial Nerve III Function and sign of dysfunction - ANS Oculomotor
Contains motor fibers to interior oblique and to superior, inferior, ad medial rectus extraocular
muscles that direct eyeball; levator muscles of eyelid; smooth muscles of iris and ciliary body;
and proprioception (sensory) to brain from extraocular muscles
Drooping of the eyelid, eyeball moves outward, dilation of the pupil, double vision.
Cranial Nerve IV Function and sign of dysfunction - ANS Trochlear
Proprioception and motor fibers for superior oblique muscle of eye (extraocular muscles)
Rotation of eyeball upward and outward, double vision
Cranial Nerve V Function and sign of dysfunction - ANS Trigeminal
(facial muscles including chewing, facial sensation) This is the largest cranial nerve Both motor
and sensory for face; conducts sensory impulses from mouth, nose, surface of eye, and dura
mater; also contains motor fibers that stimulate chewing muscles
Sensory root - Pain or loss of sensation in the face, forehead, temple and eyes.
Motor root - affecting the jaw, trouble chewing
Cranial Nerve VI Function and sign of dysfunction - ANS Abducens
Moves the eyeballs outwards by sending nerve impulses to the lateral rectus muscles
,Deviation of the eyes outward; double vision
Cranial Nerve VII Function and sign of dysfunction - ANS Facial
(taste, tears, saliva and facial expressions);
Mixed: 1. Supplies motor fibers to muscles of facial expression and to the lacrimal and salivary
glands.
2. Carries sensory fibers from taste buds of anterior part of tongue
Paralysis of all the muscles in one side of the face, inability to wrinkle the forehead, close the
eye, whistle, deviation of the mouth. Bell's Palsy
Cranial Nerve VIII Function and sign of dysfunction - ANS Vestibulocochlear
(acoustic) auditory: Purely sensory; vestibular branch transmits impulses for sense of
equilibrium, cochlear branch transmits impulses for sense of hearing
Deafness or ringing in the ears, dizziness, nausea and vomiting
Cranial Nerve IX Function and sign of dysfunction - ANS Glossopharyngeal
(swallowing, saliva, taste)
Mixed: 1. Motor fibers serve pharynx and salivary glands. 2. Sensory fibers carry impulses from,
pharynx, posterior tongue, and pressure receptor of carotid artery (blood pressure)
Disturbance of taste; Difficulty in swallowing
Cranial Nerve X Function and sign of dysfunction - ANS Vagus
(control of PNS: smooth muscles of GI tract); Sensory and motor impulses for pharynx; a large
part of this nerve is parasympathetic motor fibers, which supply smooth muscles of abdominal
organs
Hoarseness and difficulty swallowing and talking.
This nerve also regulates the heart, blood vessels and digestion resulting in irregular heartbeat
and lowered blood pressure. It regulates the stomach telling it to move food through the
digestive system, thus damage can result in decreased digestion and thus nausea, bloating and
vomiting.
Cranial Nerve XI Function and sign of dysfunction - ANS Spinal Accessory
, (Moving head & shoulders, swallowing); provides sensory and motor fibers for
sternocleidomastoid and trapezius muscles (movement of head and shoulders) and muscles of
soft palate, pharynx, and larynx (swallowing)
Dropping of the shoulder; inability to rotate the head away from the affected area.
Cranial Nerve XII Function and sign of dysfunction - ANS Hypoglossal
(tongue muscles, speech, swallowing);Carries motor fibers to muscles of tongue and sensory
impulses from tongue to brain.
Paralysis of one side of the tongue; deviation of tongue toward paralyzed side; thick speech.
Cerebrum Location, Function, Signs of injury/lesion/disorder - ANS Largest, most upper portion
of the brain. Divided into left and right hemispheres.
Contains basal ganglia which works together to modify voluntary movements, have a role in
cognition and emotions, and have inhibitory effects on thalamus.
Basal ganglia is part of the diencephalon and works with cerebellum to modify movements,
specifically modify those movements transmitted via the extrapyramidal spinal tracts. These
tracts are responsible for gross motor movements, facial expression, posture, muscle tone,
speech and swallowing.
Functionally, it obtains information from your surroundings and/or body and then sends that
information to a specific part of the cerebrum. The cerebrum interprets the knowledge and
decides what must happen next.
Signs of injury are dependent on the lobe affected
Parkinson's Disease is a degenerative disorder of the basal ganglia
Frontal lobe location, function, signs of injury/lesion/disorder - ANS Located near the front of
the head (anterior portion), under the frontal skull bones and near the forehead. Largest lobe.
Contains Broca's Area.
Directs voluntary skeletal actions (contralaterally). Responsible for communication (talking,
writing), emotions, intellect, reasoning, judgment and behavior.
Broca's area (responsible for motor aspects of speech)
Damage can cause impairments in judgment, attention span and organizational ability, as well
as a loss of motivation. When compromised, a patient may become impulsive, act rashly, and
adopt risky behaviors such as substance abuse.
Damage to the Broca area from CVA will cause difficulty in forming words (expressive aphasia)
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